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Cu-Ag-RE alloy in-situ nano fiber composite material

A composite material and nanofiber technology, which is applied in the field of Cu-Ag-RE alloy in-situ nanofiber composite materials, can solve the problems of electrical conductivity that cannot meet the requirements, increased costs, and strength that cannot meet the requirements.

Inactive Publication Date: 2006-05-24
KUNMING INST OF PRECIOUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cu-Ag alloy in-situ composite materials with high Ag content increase the cost, and the electrical conductivity often cannot meet the requirements; the cost of Cu-Ag alloy in-situ composite materials with low Ag content is reduced, and can maintain high electrical conductivity, but the strength often fail to meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]The alloy composition of the composite material of the present invention is a Cu-Ag-Sc alloy containing 8% Ag and 0.02% Sc (mass fraction), which is smelted by first vacuuming (<0.1Pa) and then filling with Ar gas. First melt Cu and Ag or Cu-Ag alloy, then add the third component Sc, pour it into the preheated high-purity graphite mold after melting, control the cooling rate of the ingot to about 60 / s, and obtain a cylindrical casting with a certain taper ingot. After initial processing such as cold forging, cold rolling and drawing, the ingot is subjected to an intermediate heat treatment at 350°C / 1h at a true strain η = 3.0, and then cold deformed with a true strain η = 8 to prepare an in-situ nanofiber composite. Its properties are: UTS=1180MPa, conductivity=80%IACS.

Embodiment 2

[0027] The alloy composition of the composite material of the present invention is the Cu-Ag-Ce alloy that contains 10%Ag, 0.04%Ce (mass fraction), adopts the similar smelting and processing technology with embodiment 1, make 350 when real strain η=3.0 ℃ / 1h intermediate heat treatment, and then cold deformation with true strain η=9.8, the performance of the prepared composite material is: UTS=1360MPa, electrical conductivity=68%IACS.

Embodiment 3

[0029] The alloy composition and smelting and processing techniques of the composite material of the present invention are the same as those in Example 2, but the alloy undergoes two intermediate heat treatments during the processing: namely, when the real strain η=2.3 and 2.95, the intermediate heat treatment is performed at 350°C / 1h respectively, and then The performance of the prepared Cu-10Ag composite wire is as follows: UTS=1500MPa, conductivity=65%IACS under the large deformation of real strain η=10.2.

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Abstract

The invention relates to normal position nm fiber enhancing Cu basal compounding material of Cu-Ag-RE alloy that has high strength and high conductivity. The material uses Cu as basal body, and contains Ag less than 15%, RE less than 0.1%. The best performance of the compounding material is that: UTS is over 1.5GPa, relative conductivity is over 60% IACS. The invention could be used as high strength and high conductivity conductor material.

Description

technical field [0001] The present invention relates to the preparation technology and properties of Cu-based composite materials reinforced by in-situ nano-Ag fibers of Cu-Ag-RE (rare earth) alloy containing low Ag. The highest performance is reached: ultimate tensile strength UTS≥1.5GPa, relative conductivity ≥60%IACS, can be used as high-intensity pulsed magnetic field conductor material, integrated circuit frame material, high-performance electrical contact material and everything that requires high strength and high conductivity. Performance usage. Background technique [0002] With the development of modern industry and high technology, excellent conductor materials with comprehensive properties of high strength and high conductivity are required in many fields. The induction coil material used as a high-intensity pulsed magnetic field magnet requires high strength to resist the Lorentz force generated by electromagnetic induction to avoid coil bursting, and also requ...

Claims

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Application Information

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IPC IPC(8): C22C49/14C21D8/06C22C47/00
Inventor 宁远涛
Owner KUNMING INST OF PRECIOUS METALS
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